https://git.ruby-lang.org/ruby.git/commit/?id=14ab281faa

From 14ab281faa7f740afd41ce4b43b00edb73eff990 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Rodr=C3=ADguez?= <deivid.rodriguez@r...>
Date: Wed, 8 Jul 2020 21:14:18 +0200
Subject: [rubygems/rubygems] Disallow warnings to creep into the test suite

https://github.com/rubygems/rubygems/commit/694e6afee7

diff --git a/lib/rubygems/test_case.rb b/lib/rubygems/test_case.rb
index 69f6e6d..a724976 100644
--- a/lib/rubygems/test_case.rb
+++ b/lib/rubygems/test_case.rb
@@ -289,6 +289,10 @@ class Gem::TestCase < Minitest::Test https://github.com/ruby/ruby/blob/trunk/lib/rubygems/test_case.rb#L289
   # or <tt>i686-darwin8.10.1</tt> otherwise.
 
   def setup
+    @orig_stderr = $stderr.dup
+    @captured_stderr = Tempfile.new("captured_stderr")
+    $stderr.reopen @captured_stderr
+
     @orig_env = ENV.to_hash
     @tmp = File.expand_path("tmp")
 
@@ -462,6 +466,16 @@ class Gem::TestCase < Minitest::Test https://github.com/ruby/ruby/blob/trunk/lib/rubygems/test_case.rb#L466
     end
 
     @back_ui.close
+
+    $stderr.rewind
+    err = @captured_stderr.read
+    assert_empty err
+  ensure
+    @captured_stderr.unlink
+
+    $stderr.reopen @orig_stderr
+    @orig_stderr.close
+    @captured_stderr.close
   end
 
   def credential_setup
-- 
cgit v0.10.2


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